This video is very convincing, but it could be a viral for an alien-related horror movie being made of 'found' video like Blair Witch or Paranormal Activity. Graded B for the time being, at least.
It's amazing what can be done to alter a video.
The sound of their footsteps seem inapropiate for walking on grass and perhaps the most obvious discrepency is that their foward progress is out of sync with the pace and rythym of their footfall. Or so it seemed to me. I'd be interested in anyone elses take on this aspect of the video.
The jury is out on this one.